Splitting jack for glass cylinders



Oct. 13,1925. 1,557,528

J. H. HOWARD SPLITTING JACK FOR GLASS CYLINDERS Filed March 11, 1925INVENTOR.

J06 1i. flan (2rd,

' I ATTORNEYJ invention in Patented Oct. 13, 1925.

UNITED STATES v 1,557,528 PATENT OFFICE.

SPLITTIN G JACK FOR GLASS CYLINDERS.

Application filed March 11, 1925. Serial No. 14,599.

To all whom it may concern:

Be it known that I, Jon H. HoWnRD, a citizen of the United States,residing at Okmulgee, in the county of Okmulgee and State of Oklahoma,have invented a new and useful Splitting Jack for Glass Cylinders, ofwhich the following is a specification.

The object of my invention is to provide means by which the upper porton of a glass cylinder may be supported during the spiltting of thecylinder.

he accompanying drawing illustrates my use within a. glass cylinder.

In the drawing 10 indicates a splitting buck of any desired form uponwhich a glass cylinder 11 may be supported.

The splitting of cylinders of this klnd is accomplished either by theuse of a hot iron, or a cutter, and when the split occurs there isgenerally an automatic overlapplng of the freshly formed edges, due tothe internal tension of the cylinder.

In the case of single strength glass it is generally not necessary tosupport the up per regions of the cylinder at the t1me of split, but incase of double strength cylinders it is not unusual, if the upperregions are not supported at the time of split, for the cylinders tocrack lengthwise in the up per regions.

In order to avoid this difficulty, while at the same time avoiding anyinterference with the splitting operation, I have provided the jackshown in the drawings, said jack comprising a lever 12 articulated witha standard 13, the standard being so formed at its lower end that itwill contact with the cylinder to one side or the other, or both, of thelowest part of the interior of the cylinder, leaving a regionlongitudinally of the cylinder, at its lowest point, free for theapplication of the splitting iron or splitting tool.

Most conveniently, standard 13 is formed ly spaced feet 14, 14.

find it also most convenient to articulate the standard with the leverso as to form a short arm provided with a padded the lower end of theinto a pair of lateralhead 15 adapted to engage the upper interior ofthe cylinder without scratching, and a longer arm of formed at its endso as to be conveniently grasped by the hand of the operator.

In use, a cylinder having been placed upon a buck, the jack man placesthe jack within the cylinder as indicated and holds the outer end of thelever 12 so that the padded l 15 will engage the interior of thecylinder near the middle of its length, the feet 14 straddling thelowest line of the cylinder. The splitter, operating from the op positeend of the cylinder, then inserts his splitting iron, or splitting tool,moving the same between arrangement being such that, when the splitoccurs, the jack man may support the upper regions of the cylinder andprevent cracking at that point.

Owing to the articulation between the lever and standard, the jack isreadily placeable in position, readily adjustable to sizes of cylinders,and readily usable. It is most conveniently made of wood.

I claim as my invention:

litting jack for lated therzwith upon an axis transverse to the lengthof the lever, said lever having one end adapted to enga e the upper 5interior of the glass cylinder and the other end adapted to be engagedby the hand of an operator.

2. A splitting jack for glass cylinders comprising a standard havinglaterally separated feet and a lever articulated therewith upon an axistransverse to the length of the lever, said lever having one end adaptedto engage the upper interior of the glass cylinder and the other endadapted to be engaged by the d of an operator.

In witness whereof, I Jon H. HOWARD, have hereunto set my hand atOkmulgee, Oklahoma, this 7th day of March, A. D. one thousand ninehundred and twenty-five.

JOE H. HOWARD.

